Log Message:
games/wesnoth: Broken by boost-1.87.

Note: I am not marking this broken to say the package should go away;
I'm just recording the fruit of my investigation into why the build
failed, why I think it will continue to fail without intervention,
and where I stopped investigating, so the next person can pick up
where I left off to fix this without wasting any time on half the
build before hitting the same problem.